Canon BJ-20 User Manual - Page 26
Ripple Pattern Test in BJ-10e mode, LF/FF switch.
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5 The printer starts printing a test page (Ripple Pattern Test). A sample portion of the test page is shown below. If any printing problem occurs, see chapter 7 on troubleshooting. Ripple Pattern Test in BJ-10e mode 6 Self-test is completed when a full page of the test pattern is printed. To suspend the test before it ends. Press the LF/FF switch. To resume, press the switch again. When the test is suspended (the ON LINE indicator blinking), you can, for example, press the ON LINE switch to turn the printer online; but if you do so, you cannot return to the test again, without starting from step again. To quit the test before it ends. z Press the ON LINE switch. To remove the paper, press the ON LINE switch to turn the printer offline, then press the z LF/FF switch. Notes z In step 1, if you hold down the PITCH switch (instead of the LF/FF switch), the printer will print a sample in each of the following pitch and style (All Modes Test) using courier font. z HQ proportional